What was found
AIRCRAFT RETURNED DUE TO RT HYDRAULIC SYSTEM LOST. DURING MAINTENANCE CHECK, THE HYDRAULIC CONTAINER WAS EMPTY AND WITH A DRIP IN THE RT AFT CARGO COMPARTMENT. AIRCRAFT WAS SENT TO THE HANGAR AND A BROKEN LINE IN THE RT HYDRAULIC SYSTEM MODULE AND (3) CLAMPS WERE DETECTED WITH DAMAGES. CLAMPS, HYDRAULIC PUMP, HYDRAULIC UNION AND WATER SEPARATORS WERE REPLACED IAW MM 20-10-13, 29-10-05, 29-10-00 AND 21-20-00, TESTED CORRECT. DURING OVERNIGHT CHECK, ENGINE AND PRESSURIZATION TESTS WERE PERFORMED IAW MM 71-00-00 AND 21-00-00, ALL CORRECT. THE OVERWEIGHT INSPECTION WAS NOT NECESSARY DUE TO THE MAXIMUM LANDING WEIGHT IS 58,060 KGS. AND AIRCRAFT LANDED WITH 44750 KGS.